1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LekaFEV [45]
2 years ago
14

Pls help it is due today

Mathematics
1 answer:
faltersainse [42]2 years ago
7 0
Ok I recommend you start by
You might be interested in
A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution. How many of each should be used ?
schepotkina [342]

Answer:

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

Step-by-step explanation:

Let us represent:

The number of liters of 25% acid solution = x

The number of liters of 40% acid solution = y

Our system of Equations =

x + y = 240 liters....... Equation 1

x = 240 - y

A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution.

25% × x + 40% × y = 240 liters × 30%

0.25x+ 0.4y = 72...... Equation 2

We substitute 240 - y for x in Equation 2

0.25(240 - y)+ 0.4y = 72

60 - 0.25y + 0.4y = 72

Collect like terms

- 0.25y + 0.4y = 72 - 60

0.15y = 12

y = 12/0.15

y = 80 Liters

Solving for x

x = 240 - y

x = 240 liters - 80 Liters

x = 160 liters

Therefore,

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

5 0
2 years ago
A teacher has a bag of candy. If she gives every student in her class 4 pieces of candy, she is left with 48 pieces of candy. Ho
yawa3891 [41]
Well you can't actually find a number, but you can make an equation.
lets call the bag of candy x, and the number of students in the teachers class S.

she gives every student in her class 4 pieces, so to find that amount, we have to multiply the number of students in her class by 4, the pieces of candy. 4S

afterwards she has 48 pieces, which is the endpoint, x is the starting point because that's the amount of candy the teacher started with.

so your equation is x-4S=48, but the thing is, the question is looking for the amount of students she gave candy to, so we have to isolate S, or in easier words; put S on one side, and the numbers on the other.

so the equation is S=1/4x-12

6 0
3 years ago
If 1/4 cup of chocolate chip cookie dough ice cream contains 14 grams of fat, how many grams of fat are in two quarts of the ice
jarptica [38.1K]

Answer:

112

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the answer to y=2x+3<br> and y=3x+5
Alla [95]

Answer:

(-2,-1)

Step-by-step explanation:

y=2x+3

y=3x+5

so y=y

then:

2x+3=3x+5

3-5= 3x-2x

-2= X

x=-2

3 0
3 years ago
Read 2 more answers
The lumberyard where you work sold a customer two boards . They measure 10 1/4 feet and 8 2/4 feet what is the total of the two
Lelechka [254]
If you add the two numbers, 10 +8 is 18.  The fractional parts are 1/4 and 2/4 which equals 3/4.  So the total length is 18 and 3/4 feet.
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many pieces 3 and three fifths in. long can be cut from 28 metal rods each 15 in.​ long? Disregard waste.
    15·2 answers
  • Solve -3y + 12 = -48
    6·1 answer
  • How many groups of sixty are in two hundred forty-four
    9·2 answers
  • Sophia and Olivia shared 60p so that Olivia had 10p more than Sophia. How much did Sophia have?
    14·1 answer
  • 140 is 9% of what???
    11·1 answer
  • Cant do word problems. ​
    10·1 answer
  • What is 1/5 times 24 as a estimate?
    10·2 answers
  • Read below for the information
    8·1 answer
  • 2 plus 2 what is it​
    14·2 answers
  • _.._
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!